*{
    margin: 0;
    padding: 0;
}
.container{
    position: relative;
    width: 100%;
    height: 50px;
    background-color: rgb(246, 152, 52);
}
.container img{
    float: left;
    left: 20px;
    height: 80%;
}
.text{
    position: absolute;
    display: block;
    width: 100px;
    left: 50%;
   margin-left: -50px;
   font-size: large;
   line-height: 50px;
}
article{
    width: 80%;
    height: 500px;
    margin: 0 auto;
    background-color: rgb(225, 226, 226);
}
.liuyan{
    margin-left:20px;
    font-size: larger;
}
#liuyanban{
    width: 90%;
    height: 200px;
    margin-left: 30px;
}
#submit{
    display: block;
    width: 50px;
    height: 30px;
    margin-left: 30px;
}
.lianxi{
    width: 100%;
    height: 250px;
    line-height: 250px;
    margin-left: 30px;
    font-size: larger;
}